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THEODORE .P. PEGK, 0 SAVMANNAH, GEORGIA.

Letters 'Patent No. 82.158. dated September 15, 1868.

IMPROVEMENT IN-SMOKE-STAGKS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, THEODORE P. PEGK, of Savannah, in the county of Ghatham, and State of Georgia, have invented a new and useful Improvement in Smoke-Stacks; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, in which Figure 1 represents a sectional elevation of a smoke-stack constructed according to my improvement.

Figure 2,- a view of the cone-box removed from the smoke-stac k.

Figure 3, a horizontal section of the stack viewed from below, taken as denoted by the lines: a: in fig. 1; and

Figure 4 a cross-section of the cone-box, taken as denoted by the line a: a: in fig. 2.

Similar letters of reference indicate corresponding parts in the several figures.

This invention is applicable, not only to locomotives, but also to stationary and marine engines, and it cons sists, first, in the construction of the cone-box with perforated upper section, having outlets or port-holes covered by suitable bonnets or port-covers; and, furthermore, in the construction and arrangement of an inverted truncated cone-shaped sieve, attached to the upper part of the stack, and opening into the cone-box, whereby sparks,

cinders, and other solid burning matter are more efl'ectually arrested and turned.

In order that others may be enabledto understand the construction and operation of my invention, Iwvill now proceed to describe it with reference to the drawings.

A is the interior smoke-pipe, opening into the cone-box, B, at its bottom, and which may be slightly enlarged at the top, to permit the smoke and steam to expand, thereby facilitating the separation of the sparks. The cone-box B, which is or may be cylindrical, is provided with a flanged bottom,.a, which rests upon brackets, b, projecting from the inner surface of the outer shell or spark-holder, D. This cone-box, having the usual bonneted outlets or port-holes, c, for exit of sparks into the spark-holder,is provided with a perforated upper section, B, constructed of perforated metal or heavy wire gauze, and which contains additional honneted or covered outlets, c, of elongated formation, perpendicularly inclined or spirally out within the said perforated section,

and serve as a means of exit to such sparks as may have been carried upward by the draught. The bonnetsor covers, It, to these ports a, are not secured at their tops and sides, as are the bonnets g of thelower openings 0, but are secured at one side only, and are so curved as to conduct the sparks against the under side of the stack covcr or top, E, or clse down into the outer shell D. Thelcone-box B it is preferred to make of somewhat larger diameter at the junction of the upper and lower sections than elsewhere, to further assist in securing the desired end, 0 is the cone, of ordinary construction, with similar curved fianges,-d, except that said flanges are somewhat wider-tat the base of the cone, and withelongated points extending nearly to the outlets or portholes 0 of the lower section of the cone-box B. The said cone 0, instead of being secured to the top of the .cone-box, as is usually the case, is made with a flange, f, or other convenient arrangement, by which it is or may be supported upon vertical studs or columns, s, projecting from the bottom of the cone-box, and rigidly secured thereto, by means of nuts and screws, or otherwise, with the apex of the said cone C over the centre of the interior smoke-pipe A.

Secured to the upper portion of the stack-cover or top E is a sieve or spark-catcher, F, of inverted truncated cone formation, opening into the perforated upper section of the cone-box from above, so that, when said sparks ascend through the cone box, they strike the under side of said sieve, which inclines them in the'diretion of lZllGijYflllS of thc surrounding perforated section of the cone-box, where they find outlet through the elongated perpendicularly-inclined or spirally-arranged port-holes a into the outer shell or spark-holder D.

The smoke, steam, and sparks are ejected from-the interior pipe A against the cone. The sparks, binders, and otherburning matter, being heaviest, arereflfected from the sides of the cone, and, being conducted by the spiral flanges cl, are thrown out of the cone-box, through the port-holes a, into the outer shell or spark-holder I).

Those sparks which are carried up by the draught strike against the sidesof the sieve F, and are thereby driven out of the cone-box through the port-holes a, in the upper section thereof, and are lodged within the said outer shell D, so that the escape of sparks is more effectually prevented than by smoke-stacks of ordinary construction. I i

What I claim as my invention, and desire to have secured by Letters Patent, is-

1. The cone-box B, having'perfox'ated upper section, with bonneted outlets or port-holes a, substantially as herein described.

2. The inverted truncated'cone-shaped sieve F, arranged within the perforated upper section of the conebox B, substantially as and for the purpose herein set forth.

3. The combination of the cone-box B and sieve F, with each other and with the other parts of a smokestack, substantially as herein specified.

THEODORE P. PEGK. Witnesses L. T. Wrnrcownx, .WM. D. HARDEN. 

